How can I print to the console this table of numbers in Java?

Question

Asking for a natural number n, I want to print to the console in this format:

                1
              2 1
            3 2 1
          4 3 2 1
        5 4 3 2 1
          .
          .
          .
n . . . 5 4 3 2 1

Inputting 4, this is what I have so far:

    1
   21
  321
 4321

I want to add a space between the numbers. This is my code:

import java.util.Scanner;
public class PatternTwo {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int userInput;
        System.out.println("Please enter a number 1...9 : ");
        userInput = in.nextInt();
        String s="";
        int temp = userInput;
        for(int i=1; i<=userInput; i++ ) {

            for (int k= userInput; k>=i; k-- ) {
                System.out.printf(" ");
            }

            for(int j =i; j>=1; j-- ) {
                System.out.print(j);
            }


            System.out.println("");
        }

    }

}

Answer 1

Add a space in front of the number to be printed and double the spaces above so that it is not a pyramid. Something like this:

import java.util.Scanner;
public class PatternTwo {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int userInput;
        System.out.println("Please enter a number 1...9 : ");
        userInput = in.nextInt();
        String s="";
        int temp = userInput;
        for(int i=1; i<=userInput; i++ ) {

            for (int k= userInput; k>i; k-- ) { // <- corrected condition
                System.out.printf("  ");
            }

            for(int j = i; j>=1; j-- ) {
                System.out.print(j);

                // check if not 1 to avoid a trailing space
                if (j != 1) {
                    System.out.print(" ");
                }
            }


            System.out.println("");
        }

    }

}

EDIT

Thanks to /u/shash678 I corrected my solution to remove all unnecessary or wrong spaces

Answer 2

How about a cleaner solution, which avoids using nested for-loops:

public static void main(final String[] args) {
    final Scanner scanner = new Scanner(System.in);
    System.out.print("Please enter a number 1...9 : ");
    final int n = scanner.nextInt();

    final ArrayList<String> suffixes = new ArrayList<>();
    for (int i = 1; i <= n; i++) {
        suffixes.add(0, i + " ");

        final String prefix = String.join("", Collections.nCopies(n - i, "  "));
        final String suffix = String.join("", suffixes);

        System.out.println(prefix + suffix);
    }
}